Bruce Nunnally Posted August 9, 2011 Report Share Posted August 9, 2011 The Mass Air Flow sensor measures the mass of air entering an engine. The fuel injection uses this and other information to predict the correct fuel/air mixture. The MAF sensor used on the Cadillac STS-V and several other GM vehicles is the ACDelco 213-4222, GM p/n 15865791. This sensor is actually made by Hitachi. It [...] View the full Blog Post Quote Bruce 2016 Cadillac ATS-V gray/black Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
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